DE2605983A1 - DEVICE FOR THE STACKING OF DIE-CUTTING PARTS - Google Patents

Description

Applicant: Göppingen, the L. Schuler GmbH - P 6028 - KP / R / F

Bahnhofstrasse 41 ^ 67 2605983

7320 Goeppingen

Device for stacking punched parts in accordance with the punching pattern

The invention relates to a device for stacking in an orderly manner in accordance with the punching pattern of stamped parts produced in the follow-up process according to the generic term of claim 1.

Such a device is known from DT-PS 1110 118, for example. By means of such a device stamped parts, e.g. E-sheets for Magnetic cores of transformers, manufactured and stacked according to the die-cut pattern. The stacking takes place perpendicularly through a die a cut tool extending stacking channel and by means of a guide that is constructed with permanent magnets, on a discharge device. When a desired or sufficient stack hone is reached, the punched parts are conveyed away. During the removal process, the punching machine and the associated material feed are stopped, and the bar magnets, which are designed as guides, hold the punched parts that are not to be retrieved in the orderly position. As ready Erwttbnt, the punching machine must be stopped in the known device during the Abfördervorgangee a complete stack and thus the Stanzing process can be interrupted.

In order to avoid this mode of operation which reduces the performance, it continues to be known (GB-PS 13 07 961), below in the area of the stack edge magnetic To arrange conveyor binders on which the rod parts are placed and from the area of the Punching machine to be challenged. At the end of the conveyor belts are then Stacking devices with facilities for the formation of intermediate stacks are provided. In these devices, the stacking channels must be designed so precisely that that with each Soimlttvorgang only the respective lowest position to the conveyor belts

834/0423

is passed, whereby a shingled depositing of the stamped parts on the conveyor belts can be achieved. Furthermore, additional measures must be taken which allow stacking on the stacking devices according to the die-cut pattern. These known devices work satisfactorily, are However, this involves a lot of effort.

The object of the invention is therefore to provide a device for the punching pattern Orderly stacks of stamped parts produced using the sequential cutting process indicate that allows efficient, optimal operation without additional measures and with reduced effort.

According to the invention, this object is achieved by the features specified in the characterizing part of patent claim 1.

Particularly advantageous refinements of the invention are set out in the subclaims refer to. A high level of operational reliability and high performance can be achieved by means of a device according to the invention, with additional expenditure In the form of magnetic conveyor belts, there is no need for the stacking, which takes place in accordance with the punching pattern, directly through the stacking channel in the die of the cutting tool.

A particularly advantageous embodiment of the invention is based on a The drawing is described in more detail below.

Show it:

Fig. 1 shows a punching machine with a device ium

stacks according to the die-cut pattern in a side view, partly in section,

FIG. 2 shows a stacking channel with a mandrel tip and a stacking mandrel in an enlarged form compared to FIG. 1 Representation in section and

FIG. 3 shows a plan view according to FIG. 2.

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The system shown in Fig. 1 shows a high-speed press as a punching machine 10. In a Pressengeetell 11 of the high-speed press 10 is a Plunger 12 out, on which a male part 13 of a cutting tool in the usual Technology is attached. A die 15 of the cutting tool is also attached to a press table 14 using known technology. The die 15 and the male part 13 of the cutting tool are connected to one another via column guides 16 in operative connection. In the present example there is a cutting tool 13, 15 shown, with the rotor laminations 17 and stator laminations 18 for electrical machines in the sequential cutting process, i.e. during a punching process, i.e. a companionway of the plunger 12 can be produced. The die 15 is provided with a stacking channel 19 for the rotor laminations 17 and a stacking channel 20 for the stator laminations 18. For the sake of simplicity, the device is suitable for the punching pattern ordered stacks only drawn for the stator laminations 18 in more detail. The device required for stacking the rotor laminations 17 is of equivalent design. The device consists essentially of the stacking channel 20 formed in the die 15, to which a guide in the form of a stacking mandrel 21 in a vertical direction Direction - punching direction - is subordinate. The stacking mandrel 21 forms a stacking station with a stacking table 22 and can be raised and lowered in the stacking table 22 stored. Furthermore, on the stacking table 22 there is another pneumatic or hydraulic one actuated cylinder-piston unit 23 is arranged, the piston rod 24 of which is connected to a conveyor slide 25. The conveyor slide 25 has, for example a contour adapted to the stator laminations 18 and has the task of placing a finished stack of stator laminations 18 on a chain conveyor 26 for the purpose of removal to push. The stacking station 21, 22, the cylinder-piston unit 23 with the conveyor slide 25 and the chain conveyor 26 form a discharge conveyor device.

Another cylinder-piston unit 27 is attached to the press table 14, the piston rod 28 of which is mounted displaceably in the die 15, slotted slide 29 can be coupled. The slotted slide 29 engages around a mandrel tip 30 (FIGS. 2, 3) which is provided with a circumferential retaining groove 31 is. The slotted slide 29 serves primarily as a holding device

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for the Dornspftse 30, which is coaxial with the liftable and tiltable stacking mandrel 21 Operational connection is. Furthermore, a pawl 32 is provided in the die 15, by means of which the clear cross section of the stacking channel 20 can be reduced. The pawl 32 can be mechanical, electromechanical, pneumatic or hydraulic can be operated.

The stacking mandrel 21 and the mandrel tip 30 point to the orientation of the punched, stator laminations 18 to be stacked guide lugs 33 (FIG. 2). The tape material 34, from which the rotor and stator laminations 17, 18 are punched out, is conveyed by means of a feed .35.

The mandrel tip 30, the slide 29 and the associated cylinder-piston unit and the pawl 32 are used to form an intermediate stack (Fig. 1), while Jer finished stacks from the stacking table 22 onto the chain conveyor 26 is brought. The formation of the intermediate stack does not necessarily require all of the preceding mentioned elements. The formation of an intermediate stack can also only be with the pawl 32 or only with the mandrel tip SO and the slide 29.

Instead of the stacking mandrel 21, a suitably designed stacking structure can also be used be used.

The mode of operation of the arrangement described so far is as follows:

With each downfall of the ram 12 of the high-speed press 10 are off the strip material 34 rotor and stator laminations 17, 18 cut out. the Stator laminations IS fall through the stacking channel 20 in an orderly fashion (according to the groove pattern) over the mandrel tip 30 and the stacking mandrel 21 the stacking table 22, since the slide 29 is driven by the cylinder-piston unit 27 and the pawl 32 are disengaged.

As soon as a stack is completely stacked, which is known to you, not closer switch shown is detected, the slide 29 is brought into engagement, ao that the Dorngpitse 30 by means of the retaining groove 31 duroh the slide

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is fixed in the stacking channel 20. The still stamped stator laminations 18 are stacked on the slide 29 and the mandrel tip 30, during the Stacking mandrel 21 is lowered below the level of the stacking table a 22 and the stack by the delivery slide 25 actuated with the cylinder-piston unit 23 is transferred to the chain conveyor 26. As soon as the conveyor slide 31 in its starting position has returned, the stacking mandrel 21 is raised again and brought into coaxial operative engagement with the mandrel tip 30. The slider 29 also returns to its starting position, so that the intermediate stack that has meanwhile been formed reaches the stacking table 22. The stamped stator sheets 18 are now back directly on the stacking table 22 to a finished stack stacked. The process of conveying away and intermediate stacking then takes place as previously described.

the In order to interfere with slider 29 to be engaged, e.g. B. by clamping a stator lamination 18 to avoid, the pawl 32 is to be used, the ensures a safe separation of the stator laminations falling through the stacking channel 20 as soon as it is brought into engagement.

If a mandrel tip 30 is not used during the formation of an intermediate stack is, the stacking channel is itself with guide lugs 33 for the punching pattern Stacking to provide. In this case, the slide 29 can also be omitted, so that the intermediate stack is formed by the latch pawl 32 to be brought into engagement.

In the last-mentioned example, a plurality of - at least two - switching pawls 32 which can be actuated at the same time are preferably provided symmetrically to the stacking channel 20.

It can be seen that by means of a device according to the invention, fast ", uncomplicated", "stacking according to the dance pattern without interrupting the punching process is achieved.

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BATH ORIGINAL

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Claims (6)

2 6 O b 9 8 3 PATENT CLAIMS 1.) Device for stacking in the sequential cutting process in an orderly manner in accordance with the die-cut pattern produced stamped parts, the stamped parts being brought in a stacking channel vertically through the die of a cutting tool and are stacked on a conveying device by means of a PU system, characterized, that below the cutting plane of the die (15) of the cutting tool one the stacking over the guide (21, 30} on the discharge device (22, 23, 24, 25, 26) interrupting device (29, 32) is provided which, when engaged, forms an intermediate stack. 2. Device according to claim 1,
characterized, that the die (15) of the cutting tool with the stacking interrupting device (29, 30) is provided, and that the intermediate stack can be formed within the stacking channel (19, 20). 3. Device according to claim 2,
characterized, that the device consists of at least one of the beloved cross-section of the stacking channel (19, 20) reducing pawl (32) is constructed. 4. Device according to one of claims 1 to 3, characterized in that that the device has a Doraepitze (30) by supporting means <27, 28, 29) held within the stacking channel · (19, 20) during formation of a Zwisohenetapele i 't, and in that the mandrel tip (30) during the stacking on the discharge device (22, 23, 24, 25, 26) with a stacking mandrel (21) that can be raised and lowered and used as a guide in a coaxial rotary connection. 709834/042 3 -7 - 5. Apparatus according to claim 4,
characterized, that the holding device consists of a hi of the die (15) of the cutting tool displaceably mounted, slotted slide (29) which can be brought into engagement with the retaining groove (31) arranged in the mandrel tip (30) is. 6. Device according to one of claims 1 to 3, characterized in that that the guide (21, 30) through a stacking shaft that can be raised and lowered is formed. 709834/0423